What that means is if you have a Simple Choice monthly data allotment of 1 GB, 3 GB or 5 GB, you will get the equivalent bucket of data on your tablet for an additional fee of $10 (sorry, unlimited customers, but all-you-can-eat plans do not apply). T-Mobile says this data will be on top of the 200 MB of free data it offers each month to all of its slate customers.

It remains to be seen whether T-Mobile’s pricing moves will put a dent in AT&T and Verizon’s tablet success, which is largely driven by shared data policies that make it easy to tack a slate onto to your existing data plan. T-Mobile’s new tablet plans don’t create shared data buckets – you get a separate smartphone bucket and separate tablet bucket of equal size – so they’re not quite as flexible as AT&T and Verizon’s shared plans.

But what T-Mobile lacks in flexibility, it makes up for in price. For $80 you can get T-Mo’s Simple Choice 5 GB plan with a 5 GB match on your tablet. The equivalent shared data plan on Verizon gives you only 1 GB to split between your slate and handset. On AT&T you could get 2 GB for $75 or 4 GB for $105 to split between your two devices each month.